librpc/ndr/ndr_ntlmssp.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    routines for marshalling/unmarshalling special ntlmssp structures
   5
   6    Copyright (C) Guenther Deschner 2009
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 3 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  20 */
  21
  22 #include "includes.h"
  23 #include "../librpc/gen_ndr/ndr_ntlmssp.h"
  24
  25 _PUBLIC_ size_t ndr_ntlmssp_string_length(uint32_t negotiate_flags, const char *s)
  26 {
  27         if (!s) {
  28                 return 0;
  29         }
  30
  31         if (negotiate_flags & NTLMSSP_NEGOTIATE_UNICODE) {
  32                 return strlen(s) * 2;
  33         }
  34
  35         return strlen(s);
  36 }
  37
  38 _PUBLIC_ uint32_t ndr_ntlmssp_negotiated_string_flags(uint32_t negotiate_flags)
  39 {
  40         uint32_t flags = LIBNDR_FLAG_STR_NOTERM |
  41                          LIBNDR_FLAG_STR_CHARLEN |
  42                          LIBNDR_FLAG_REMAINING;
  43
  44         if (!(negotiate_flags & NTLMSSP_NEGOTIATE_UNICODE)) {
  45                 flags |= LIBNDR_FLAG_STR_ASCII;
  46         }
  47
  48         return flags;
  49 }
  50
  51 _PUBLIC_ enum ndr_err_code ndr_push_AV_PAIR_LIST(struct ndr_push *ndr, int ndr_flags, const struct AV_PAIR_LIST *r)
  52 {
  53         uint32_t cntr_pair_0;
  54         if (ndr_flags & NDR_SCALARS) {
  55                 NDR_CHECK(ndr_push_align(ndr, 4));
  56                 for (cntr_pair_0 = 0; cntr_pair_0 < r->count; cntr_pair_0++) {
  57                         NDR_CHECK(ndr_push_AV_PAIR(ndr, NDR_SCALARS, &r->pair[cntr_pair_0]));
  58                 }
  59         }
  60         if (ndr_flags & NDR_BUFFERS) {
  61                 for (cntr_pair_0 = 0; cntr_pair_0 < r->count; cntr_pair_0++) {
  62                         NDR_CHECK(ndr_push_AV_PAIR(ndr, NDR_BUFFERS, &r->pair[cntr_pair_0]));
  63                 }
  64         }
  65         return NDR_ERR_SUCCESS;
  66 }
  67
  68 _PUBLIC_ enum ndr_err_code ndr_pull_AV_PAIR_LIST(struct ndr_pull *ndr, int ndr_flags, struct AV_PAIR_LIST *r)
  69 {
  70         uint32_t cntr_pair_0;
  71         TALLOC_CTX *_mem_save_pair_0;
  72         if (ndr_flags & NDR_SCALARS) {
  73                 uint32_t offset = 0;
  74                 NDR_CHECK(ndr_pull_align(ndr, 4));
  75                 r->count = 0;
  76                 if (ndr->data_size > 0) {
  77                         NDR_PULL_NEED_BYTES(ndr, 4);
  78                 }
  79                 while (offset + 4 <= ndr->data_size) {
  80                         uint16_t length;
  81                         uint16_t type;
  82                         type = SVAL(ndr->data + offset, 0);
  83                         if (type == MsvAvEOL) {
  84                                 r->count++;
  85                                 break;
  86                         }
  87                         length = SVAL(ndr->data + offset, 2);
  88                         offset += length + 4;
  89                         r->count++;
  90                 }
  91                 NDR_PULL_ALLOC_N(ndr, r->pair, r->count);
  92                 _mem_save_pair_0 = NDR_PULL_GET_MEM_CTX(ndr);
  93                 NDR_PULL_SET_MEM_CTX(ndr, r->pair, 0);
  94                 for (cntr_pair_0 = 0; cntr_pair_0 < r->count; cntr_pair_0++) {
  95                         NDR_CHECK(ndr_pull_AV_PAIR(ndr, NDR_SCALARS, &r->pair[cntr_pair_0]));
  96                 }
  97                 NDR_PULL_SET_MEM_CTX(ndr, _mem_save_pair_0, 0);
  98         }
  99         if (ndr_flags & NDR_BUFFERS) {
 100                 _mem_save_pair_0 = NDR_PULL_GET_MEM_CTX(ndr);
 101                 NDR_PULL_SET_MEM_CTX(ndr, r->pair, 0);
 102                 for (cntr_pair_0 = 0; cntr_pair_0 < r->count; cntr_pair_0++) {
 103                         NDR_CHECK(ndr_pull_AV_PAIR(ndr, NDR_BUFFERS, &r->pair[cntr_pair_0]));
 104                 }
 105                 NDR_PULL_SET_MEM_CTX(ndr, _mem_save_pair_0, 0);
 106         }
 107         return NDR_ERR_SUCCESS;
 108 }
 109
 110 _PUBLIC_ void ndr_print_ntlmssp_nt_response(TALLOC_CTX *mem_ctx,
 111                                             struct smb_iconv_convenience *ic,
 112                                             const DATA_BLOB *nt_response,
 113                                             bool ntlmv2)
 114 {
 115         enum ndr_err_code ndr_err;
 116
 117         if (ntlmv2) {
 118                 struct NTLMv2_RESPONSE nt;
 119                 if (nt_response->length > 24) {
 120                         ndr_err = ndr_pull_struct_blob(nt_response, mem_ctx, ic, &nt,
 121                                         (ndr_pull_flags_fn_t)ndr_pull_NTLMv2_RESPONSE);
 122                         if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 123                                 NDR_PRINT_DEBUG(NTLMv2_RESPONSE, &nt);
 124                         }
 125                 }
 126         } else {
 127                 struct NTLM_RESPONSE nt;
 128                 if (nt_response->length == 24) {
 129                         ndr_err = ndr_pull_struct_blob(nt_response, mem_ctx, ic, &nt,
 130                                         (ndr_pull_flags_fn_t)ndr_pull_NTLM_RESPONSE);
 131                         if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 132                                 NDR_PRINT_DEBUG(NTLM_RESPONSE, &nt);
 133                         }
 134                 }
 135         }
 136 }
 137
 138 _PUBLIC_ void ndr_print_ntlmssp_lm_response(TALLOC_CTX *mem_ctx,
 139                                             struct smb_iconv_convenience *ic,
 140                                             const DATA_BLOB *lm_response,
 141                                             bool ntlmv2)
 142 {
 143         enum ndr_err_code ndr_err;
 144
 145         if (ntlmv2) {
 146                 struct LMv2_RESPONSE lm;
 147                 if (lm_response->length == 24) {
 148                         ndr_err = ndr_pull_struct_blob(lm_response, mem_ctx, ic, &lm,
 149                                         (ndr_pull_flags_fn_t)ndr_pull_LMv2_RESPONSE);
 150                         if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 151                                 NDR_PRINT_DEBUG(LMv2_RESPONSE, &lm);
 152                         }
 153                 }
 154         } else {
 155                 struct LM_RESPONSE lm;
 156                 if (lm_response->length == 24) {
 157                         ndr_err = ndr_pull_struct_blob(lm_response, mem_ctx, ic, &lm,
 158                                         (ndr_pull_flags_fn_t)ndr_pull_LM_RESPONSE);
 159                         if (NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
 160                                 NDR_PRINT_DEBUG(LM_RESPONSE, &lm);
 161                         }
 162                 }
 163         }
 164 }
 165
 166 _PUBLIC_ void ndr_print_ntlmssp_Version(struct ndr_print *ndr, const char *name, const union ntlmssp_Version *r)
 167 {
 168         int level;
 169         level = ndr_print_get_switch_value(ndr, r);
 170         switch (level) {
 171                 case NTLMSSP_NEGOTIATE_VERSION:
 172                         ndr_print_VERSION(ndr, name, &r->version);
 173                 break;
 174
 175                 default:
 176                 break;
 177
 178         }
 179 }
 180
 181